LAWS AND CHARACTERISTICS OF THROWING POWER CHANGES FOR DIFFERENT WOMEN DISCUS THROWERS

Abstract

Throwing power means that rate of muscle do work when throwers do throwing movements. It depends on strength and speed of throwers. It is a sensitive index to mirror explosive force and fast strength Tl1is paper adopts experiment and video analysis methods. The purpose was to research the laws and characteristics of throwing power changes for different women’s discus throwers through measuring results of throwing various weights to deferent Chinese women’s discus throwers (master:55m, n1=13; first grade: 51m, n2=17; second grade: 39m, n3=30). The results show that following: 1.Throwing weight of women[s discus throwers is closely related to throwing power. With increasing of the weight, the power also raise gradually (r1 =0. 905, r2= o 862, r3=0.900) But when the weight comes up to a certain extent, the power not only don’t raise but also reduce obviously if the weight is continued increasing (r1 =0.996, r2=-0.964, r3= -0.933). It is various that different women’s discus throwers show the greatest throwing power and its corresponding throwing weight. Generally speaking, the higher thrower’s performance level is, the greater the greatest throwing power and its corresponding throwing weight show. Even if the level of throwers is same, the weight of the greatest throwing power is not completely same